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Commit Graph
69 Commits
Author SHA1 Message Date
Phil BudneandGitHub 1241caac7f Merge pull request #208 from sebras/typos/sysmap 
Fix typos in sysmap after manual review.
 2020-01-22 13:39:17 -05:00
Phil BudneandGitHub 9947fbf42b Merge pull request #195 from sebras/typos/s8.s 
u.rg is "registers"
 2020-01-22 13:35:55 -05:00
phil 46c761bf5d Build Graphic II character table, include in boot track 
simplify boot paper tape (do one xfer of 4K, instead of 3K+1K)
Combine cmd/scope.cas cmd/cas.cas into sys/cas.in
Add src/other/chrtbl.s
write chrtbl.out in "ptr" format
 2020-01-15 18:01:46 -05:00
Sebastian Rasmussen b90a05a712 Fix typos in sysmap after manual review. 2020-01-08 16:11:11 +08:00
Sebastian Rasmussen 42c521fdbe Required changes to make it compile again. 2020-01-08 15:59:48 +08:00
Sebastian Rasmussen 940d8e21e2 Fix typos in s8.s after manual review. 2020-01-08 15:59:13 +08:00
Sebastian Rasmussen 3e028c40a0 Fix typos in maksys.s after manual review 2020-01-08 15:53:35 +08:00
phil 2b2e057f7f more system comments 2019-10-30 00:53:48 -04:00
phil 18186e9bd2 system: annotations about sleeping (both devices and messages) 2019-10-23 00:19:04 -04:00
phil 4b284c6bbe Improve sys annotations 
Finally understand location 7 (incremented at 60Hz)
	setting it to -1 causes clock interrupt every jiffy
Improve comments in dsktrans
Clarify cnop/cskp usage in iread/iwrite code
	iwrite and iread have common code
	entry at iwrite save return address at iread
		and overwrites return address to "skp" inst
	entry at iread puts "nop" inst at iwrite
	"xct iwrite" skips on write entry
 2019-10-21 22:24:09 -04:00
Warren Toomey f6f05e6483 A few lines got lost in the last edit to s6.s, now fixed. 2016-04-28 15:04:29 +10:00
Phil Budne 1a4c0c3c71 s6.s: add comments 2016-04-17 13:26:12 -04:00
Phil Budne c8129d7fa4 s4.s: comment disk block free and (self modifiying) char queue routines 2016-04-17 13:26:12 -04:00
Phil Budne cb187e12be update queue (and other) storage comments 2016-04-17 13:26:11 -04:00
Phil Budne 032dc37705 sys: alloc comments 2016-04-17 13:26:11 -04:00
Phil Budne 208ed1dbf5 sys comments 2016-03-31 22:53:27 -04:00
Phil Budne 615bdba101 s4.s: more comments 2016-03-29 22:18:47 -04:00
Phil Budne 687bbb06cf fix buffer cache search 2016-03-29 21:20:37 -04:00
Phil Budne 77d49f4328 s3.s: fix a comment typo 2016-03-29 11:05:03 -04:00
Phil Budne fa74947215 sys: comments for seek & tell 2016-03-28 01:02:54 -04:00
Phil Budne 9b675f2c52 fix comment paste-o 2016-03-27 01:26:30 -04:00
Phil Budne 72bbd8d4e6 s8.s: adjust "init" literal to be acceptable to native "as" 2016-03-25 01:02:38 -04:00
Phil Budne 989bd7039e coped maksys.s from scans; fixed assembly errors 2016-03-24 01:03:44 -04:00
Warren Toomey ce0a5401a9 Add trysys.s to src/sys. 2016-03-24 06:20:38 +10:00
Phil Budne ac6e7470cf disk buffer comments (and comments about a mystery) 2016-03-22 21:29:46 -04:00
Phil Budne 164125be7e sys comments 2016-03-21 11:00:19 -04:00
Warren Toomey 94fd5d49e0 I've restructured the alternative version of PDP-7 Unix so that the 
source code is now in src/alt. All the files in src/sys and src/cmd
are only annotated versions of the files in scans/.
The build/Makefile has been updated so that it can build the
original PDP-7 Unix or the alternative version.
Phil has fixed the Graphics-2 code, so that there is no need to
have any #ifdef code in the original kernel.
 2016-03-21 16:01:36 +10:00
Warren Toomey f63ad33d10 This is the beginnings of a alternative version of the PDP-7 Unix 
system which corresponds to a later development point, around mid-1971,
where the system had lost the "dd" directory and gained . and ..
entries. This is close to the system as described in
http://www.tuhs.org/Archive/PDP-11/Distributions/research/McIlroy_v0/UnixEditionZero.txt
except there are no pathnames.

To use this version: cd build; make alt; make altrun
 2016-03-21 14:28:50 +10:00
Phil Budne 053aedcf95 s7.s: fix sna/sma confusion that caused hangs in display PI code 2016-03-19 00:51:07 -04:00
Warren Toomey 64a118cb4a More kernel notes. 2016-03-19 11:05:37 +10:00
Warren Toomey 9483300758 sys status returns 13 words, the last one holds the i-number. 2016-03-18 19:47:05 +10:00
Phil Budne 89356e9aea sys (display) comments 2016-03-17 00:08:28 -04:00
Phil Budne f91b929d90 fix/add sys comments 2016-03-17 00:08:28 -04:00
Warren Toomey 320dd0418f Add missing dput to .rename 2016-03-16 11:24:56 +10:00
Phil Budne fe48c8cdc8 system comments 2016-03-15 20:48:42 -04:00
Phil Budne b94ca04259 sop.s: add comment for "cdf" IOT 2016-03-15 06:53:15 -04:00
Phil Budne ab76e46005 sys: add comments 2016-03-15 06:53:04 -04:00
Warren Toomey 4073baba05 Fix transcription error in s2.s link. 2016-03-14 20:19:48 +10:00
Warren Toomey cd7befb2de More kernel comments: link. 2016-03-14 18:26:36 +10:00
Warren Toomey cfa57f16b3 More kernel comments: partial comments for namei. 2016-03-14 17:50:13 +10:00
Warren Toomey 6ffdf4076d More kernel comments: iget 2016-03-14 17:40:46 +10:00
Warren Toomey 8b421eb27b I've commited a change to as7 to use the C pre-processor. Not sure if it's 
to everybody's taste.
 2016-03-13 21:08:43 +10:00
Phil Budne 8c20d30cd1 sop: add missing "spa" (not used in kernel!) 2016-03-13 00:05:57 -05:00
Phil Budne a929bc08b7 fix OMQ definition 2016-03-13 00:05:57 -05:00
Warren Toomey 4860c0a8b0 I've commented out some of the code in s7.s to try and disable the 
Graphics-2 I/O operations.
 2016-03-13 14:36:33 +10:00
Warren Toomey ba3b33d7da There seems to be a transcription error in s7.s, I fixed by eyeballing 
the scans.
 2016-03-13 13:21:25 +10:00
Phil Budne adc6fdcc50 sys NOTES.md: update i.nlnks comment 2016-03-11 16:33:53 -05:00
Phil Budne 9372fa5f56 sys: more comments 2016-03-11 16:32:11 -05:00
Phil Budne 802ab257b9 sys: kernel comments 2016-03-11 16:01:01 -05:00
Phil Budne df1d8e29dd update sys NOTES 2016-03-11 11:23:59 -05:00